@LOLR1
Hey, I sent the documents via the IRCC WEBFORM since I did not have the link in my application portal.
I sent my 5 documents in only one IRCC webform, in which I put "permanent residence (applied by mail)" as type of enquiry, wrote down that I was sending attachments, and completed all the data they requested.
That was in the morning. I received the automated response in the night, saying that they only are responding Afghanistan doubts etc etc, and that if I sent documents they will add them shortly. That is all.
Next day I received the pre-arrival letter, but background check is not done yet.